A Frog And A Salamander: Mating Attempt Or Free Ride? | Amphibians | Vertebrates | Urodela | Anura

A Frog And A Salamander: Mating Attempt Or Free Ride? | Amphibians | Vertebrates | Urodela | Anura

A male Frog tries to seduce a Salamander in springtime in Prigorje, Croatia.

Credit:
@Mislorod
Wikipedia

Amphibians are four-limbed and 
ectothermic vertebrates of the class 
Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae 
living in water, but some species have developed behavioural adaptations to bypass this.

The young generally undergo 
metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like 
lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline in amphibian populations for many species around the globe.

The three modern orders of amphibians are Anura (the frogs), Urodela (the salamanders), and Apoda (the caecilians). A fourth group, the Albanerpetontidae, became extinct around 2 million years ago. The number of known amphibian species is approximately 8,000, of which nearly 90% are frogs. The smallest amphibian (and vertebrate) in the world is a frog from New Guinea (Paedophryne amauensis) with a length of just 7.7 mm (0.30 in). The largest living amphibian is the 1.8 m (5 ft 11 in) 
South China giant salamander (Andrias sligoi), but this is dwarfed by prehistoric temnospondyls such as  Mastodonsaurus 
which could reach up to 6 metres in length. The study of amphibians is called 
batrachology, while the study of both reptiles and amphibians is called 
herpetology.

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